Calorific kiln.



E. A. KING.

GALORIIIC KILN. APPLICATION FILED 001215, 1907.

900,742. Patented Oct. 13,1908.

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E; A. KING. GALORIFIO KILN. APPLIOATION- FILED OCT-15, 190

900,742, Patented Oct. 13, 1908.

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E. A. KING.

OALORIFIG KILN.

APPLICATION FILED 0013.15, 1907.,

900,742, Patented 0015.13, 1908.

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WITNESSES: BC: INVENTOR A TTORNEV.

PATENT OFFICE.

EDWIN A. KING, OF PlfIILADELPHIA, PENNSYLVANIA.

cALoRI FIc KILN.

Specification of Letters Patent.

Patented Oct. 13, 1908.

Application filed October 15, 1907. Serial No. 397,585.

To all whom it may concern:

Be it known that I, EDWIN A. KING, a citizen of the United States, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have in-.

lates more particularly to the constructive arrangement of air-flues, furnace-flues and means for controlling the inlet of air into the air-flues so as to permit first of the conducting of heat from the furnace to any, ortion of the products to be burned in the riln, in which needed and to preventthe conduct of heat to other portions of the" products where not needed, so as to more thoroughly equalize inequality of conditions in the burning of said products in the kiln second to so arrange the kiln for the defined purpose as to be able to conduct at will heat and flame throughout the entire length of the arches formed by clay products orup to any portion in their length to insure uniformity of burning of the such products in the kiln; third to locate the air-outlet ofthe air-flues instead of at the beginning of the branch furnace-fluesasin the said patent, in the present kiln. substantially midway of the same was to dispense with a recombustion chamber and so as also to insure combustion of equal portions of the products of combuscombustion into certain of the branch flues.

and thus into the arches communicating with the flues; fifth to obtain by controlling the entrance of air into the furnace-flues of an ncrease in draft in certam of these flues and thus of a'su'ction action which permits of the entrance of the entire products of combustion of the furnace ora portion thereof, into one of the furnace-flues and to arches communicating therewith; and sixth to provide the furnace with two sets of observationor peep holes, one set above each of the sets of air-flues and to locate the same in the vertical central axis of the arches to permit of the ascertaining of the action of eat and flame on clay products throughout the entire cross-section of the arch.

The nature and scope of my invention will be more fully understood from the following description taken in connection with the accompanying drawings forming part hereof, in which Figure 1 is a top plan view of the kiln, partly in elevation and partly in section. Fig.2 is a front elevational view thereof. Figs. 3 and 4 are longitudinal vertical sectional views of a portion of the kiln and one of the furnaces thereof. ,Fig. 5 is a cross-sectional view of the furnaces, and Fig. 6 is a perspective view of a portion of the kiln and one of the furnaces thereof.

Referring to the drawings, 8 represents an updraft calorific kiln of usual construction,

from each of the end Walls 9 of Which extend in'the present instance, two furnaces 10. As shown in Figs. 1 and 8, the fire-chamber 11, of the furnace 10, communicates With partially triangularly shaped or converging flues 14 and '15, elevated above the grate 12, of

the fire chamber 11, the apex or meeting por tion 16, of the inner alls of the flues 14 and 15, are arranged directly in the vertical central axis of the fire chamber 11, and the pursame in striking the apex 16, and conducting an equal portion of theheat and products of combustion into each of the flues 14 and 15. These converging flues at their outwardly flaring ends are deflected into straight portions 18, to be in alinement with the arches 7 not shown, which are built in the clay prodnets to be burned in the kiln 8. The elevation 19, separating the flues 14 and 15 from the fire-chamber 11, forms a bridge-wall which prevents the'fuel from entering these flues and producing an uneven distribution of the heat and products of combustion in the arches of the. kiln. p

'In order to insure complete combustion of the equal portion of the products of combustion of thefurnace 11, entering each of'the flues'14 and'15, and prior to their entering pose of the same is to evenly distribute the heat and products of combustion coming from the fire chamber 11, by parting the the following manner.

into the arches of the kiln 8, there are provided two air-flues 20 and 21, one above the other at each side of the fire chamb r 11. The lower lines 21 arearranged below the level of the base of the furnace flues 14 and 1.5 and are inwardly and then upwardly deflected and terminate with their outlets 22 substantially in the central portion of the furnace flues 14 and 15. The upper fines 20, are arranged in alinement with the base of the furnace flues and the floor 23 of the kiln 8 and likewise terminate in the central portion of the flues 1 1 and 15, but owing to the converging outer walls of these flues extend up to the straight portion 18 of the same. As the air-flues are separated from the fireehamber 11 by a comparatively thin wall of fire brick 2 1, and as the air enters the fiues at the front wall of the furnace 10, the same is gradually. conducted from the coldest to the hottest portion of the furnace and by passing partially through the highly heated. bridgewall 19, and by being delivered at a point in alinement with the level of the bridge wall, the air will be heated to a temperature corresponding to that of the heat generated in the lire-chamber 11. The highly heated air rising in the furnace flues 14 and 15, will commingle with the flame and products of combustion of the nnconsumed products of combustion entering the same in equal portions and will insure complete consumption of these unconsumed products prior to introduction into the arches of clay product in the kiln 8. By the even distribution of the heat and products of combustion of each of the furnaces 10 of the kiln to two arches of clay products, each arch in the kiln is supplied with an equal quantity of heat and consequently the clay products if evenly spaced or built up in the kiln, will be uniformly burned throughout, as each arch will diffuse an equal amount of heat through the mass of clay products built upon and surrounding the arch. However, the placing or even spacing of the clay products in the kiln from each other is seldom attended with any degree of regularity and consequently in certain portions of the kiln they are placed closer together than other portions thereof. The re sult being an uneven burning of the clay products in the kiln 8, even if each of the arches is supplied with an equal amount of heat and products of combustion.

To equalize the uneven burning of the clay products and to insure uniformity in the burning, the heat and products of combustion of the furnaces 10 must be conducted to portions in the kiln in which the same are needed and must also be prevented from beingconducted to other portions where the heat is not needed. This is accomplished in As shown in Fig. 6, each of the furnaces 10, of the kiln S, is provided with guides 28 which serve to support slides 29 by means of which the air-lines 2t) and 21 may be wholly or partially closed. 11' 't has been determined that the clay-protlucts in the arch, for instance opposite the furnace 'llues 15, have not advanced as far in their burning as those in. the arch adjacent thereto and opposite to the ilues 14, the air tlues 2t) and 21, leading to the furnace [Inc 14-, are closed by the slides 29 at both sides of the kiln 8 while the air lines 20 and 21, for the furnace flues 15, remain open. Air will thus only enter the flues 15 and by draft and the suction action thus formed in. these llues, all the heat and the entire uncons-unied products of combustion of the furnaces 1 0, at both ends of the kiln S, will be drawn into the fines 15, and consumed therein, and the llaine of these products will enter the arch eonnnunicating with the furnace lines 15 from opposite sides of the kiln and will meet each other about midway in this arch. 1f both sets of air-Hues 20 and 21 are closed for instance at the right hand side of the kiln in Fig. 1, and only the air flues leading to the furnace llue 15 at the left hand side of the kiln remain open, the flame will be conducted in a diree tion from left to right in Fig. 1, throughmit the length of the arch eemmunieating with the furnace-fines 15. Or if the air-llues 2t) and 21, leading to the furnace line 15, are partially closed at the right hand side of the kiln 8, in Fig. 1, and entirely open on the left hand side thereof, the flame will pass up to a certain portion in the arch communieating with the lines 15. By the shifting of the slides 29, the entrance of air into the ilues 2t) and 21, at one or the other side of the furnaces 10, can readily be regulated and by this regulation and the more or less strong draft and suction action produced in the. furnace flucs the entire heat or a portion thereof, as well as the entire or a portion of the products of combustion, can be at will conducted to any portion of the clay products and be prevented from reaching other portions thereof, and thus a regulation and a uniformity in the burning of the clay products thereby always insured.

In order to permit of the ready observation of the burning of clay-products in the kiln 8, each of the furnaces 10, thereof, is provided with observation or peep holes 31) and 31, arranged one above the other and above each set of air-flues 20 and 21, and in the central vertical axis of the arches of clay products, not shown. As shown in Fig. 4, the lower peep holes 31, tern'iinate respectively, in the furnace llues 14' and 15, while the upper holes 30, also extend through the end walls 9, of the kiln 8, and terminate opposite the upper portion of the arches, not shown, connnunieating with the furnaceflues. By this arrangement of peep holes, the arches throughout their entire. length and throughout their entire cross-section are readily visible, to thus permit ofthe ascertaining of the action of heat and flame in any part of the arches. Each of the peep holes 30 and 31 is normally closed by a cover 32 pivotally secured in the point 33 to the respective furnaces 10, so as to be held by gravity in their operative position. A stop 34 arranged adjacent to each of the covers 32, serve as a rest for the same when the cover is lifted to free the peep-hole controlled by the lifted cover, as "shown in Fig. 6.

In order to revent partial closing of the air-flues 20 and 21 by the sliding door 35 of the furnaces 10 when the same are shifted to free the inlet 36 to the fire chamber 11, the air-flues' are outwardly deflected at 38, at the front or inlet portion, as shown in Figs. 1', 2 and 6.

Having thus described the nature and objects of my invention what Iclaim as new and desire to secure by Letters Patent is 1 The combination with a calorific kiln having a floor with a fire chamber formed as an extension of the front walls and with furnace-flues in the front walls in alinement with the floor and arranged toequally divide heat and products of combustion from said chamber prior to entrance into said flues, of airflues at each side of said fire-chambers in alinement with said furnace-flues and directly terminating therein and means to control the inlet of'air in said air-flues so that through partial or complete closing of certain of said flues is adapted to be deflected by increasing or decreasing the draft ,the greater part or entire portion of the heat and flames of said furnace-chamber into one of said furnaoe-flues.

2. The combination with a calorific kiln having a floor with a fire-chamber formed as an extension of the front walls and with furnace-flues in the front walls in alinement with and products of combustion from said chamber prior to entrance into said flues, of airflues at each side of said fire-chambers in alinement with said furnace-flues and directly terminating therein and means to control the inlet of air in said air-flues so that through partial or complete closing of certain of said flues, oppositely arranged, to conduct by increasing or decreasing the draft, the greater part or entire ortion of the heat and flames of one of said re-chambers into one of said furnace-fiues up to a certain portion or throughout the entire length of the arches of clay roducts.

In witness w ereof, I have hereunto set my signature in the presence of two subscribing witnesses.

EDWIN A. KING.

Witnesses: R. J. COLEMAN,

GEO. L. YEAGER.

the floor'and arranged to equally divide heat 

